RKC INSTRUMENT AE500 Communication Instruction Manual

Brand: RKC INSTRUMENT

Model: AE500

Type: Communication Instruction Manual

RKC INSTRUMENT AE500 is a digital indicator with an alarm function that can be used for a variety of applications. It features RS-485 communication, allowing it to be connected to a host computer or other devices for data logging and control. The AE500 has a wide range of input options, including voltage, current, and temperature, and can be configured to display various process variables. It also has a built-in alarm function that can be used to alert the user to process deviations.

Here are some of the key features and possible use cases for the RKC INSTRUMENT AE500:

Data logging: The AE500 can be used to log data to a host computer for later analysis. This data can be used to track process trends, identify areas for improvement, and troubleshoot problems.

Here are some of the key features and possible use cases for the RKC INSTRUMENT AE500:

Data logging: The AE500 can be used to log data to a host computer for later analysis. This data can be used to track process trends, identify areas for improvement, and troubleshoot problems.

IMAE02-E3

AE500

Communication

Instruction Manual

RKC INSTRUMENT INC.

Digital indicator

with alarm function



1999, RKC INSTRUMENT INC.

IMAE02-E3

i-1

Thank you for purchasing the RKC instrument. In order to achieve maximum performance and ensure

proper operation of your new instrument, carefully read all the instructions in this manual. Please

place this manual in a convenient location for easy reference.

SYMBOLS

: This mark indicates important information on installation, handling and operating

procedures.

: This mark indicates supplemental information on installation, handling and

operating procedures.

: This mark indicates where additional information may be located.

z

An external protection device must be installed if failure of this instrument

could result in damage to the instrument, equipment or injury to personnel.

z

All wiring must be completed before power is turned on to prevent electric

shock, fire or damage to instrument and equipment.

z

This instrument must be used in accordance with the specifications to prevent

fire or damage to instrument and equipment.

z

This instrument is not intended for use in locations subject to flammable or

explosive gases.

z

Do not touch high-voltage connections such as power supply terminals, etc.

to avoid electric shock.

z

RKC is not responsible if this instrument is repaired, modified or

disassembled by other than factory-approved personnel. Malfunction can

occur and warranty is void under these conditions.

CAUTION

: This mark indicates precautions that must be taken if there is danger of electric

shock, fire, etc., which could result in loss of life or injury.

: This mark indicates that if these precautions and operating procedures are not

taken, damage to the instrument may result.

: This mark indicates that all precautions should be taken for safe usage.

WARNING

IMAE02-E3

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This is a Class A instrument. In a domestic environment, this instrument may cause radio

interference, in which case the user may be required to take adequate measures.

This instrument is protected from electric shock by reinforced insulation. Provide

reinforced insulation between the wire for the input signal and the wires for instrument

power supply, source of power and loads.

Be sure to provide an appropriate surge control circuit respectively for the following:

- If input/output or signal lines within the building are longer than 30 meters.

- If input/output or signal lines leave the building, regardless the length.

This instrument is designed for installation in an enclosed instrumentation panel. All high-

voltage connections such as power supply terminals must be enclosed in the

instrumentation panel to avoid electric shock by operating personnel.

All precautions described in this manual should be taken to avoid damage to the

instrument or equipment.

All wiring must be in accordance with local codes and regulations.

All wiring must be completed before power is turned on to prevent electric shock,

instrument failure, or incorrect action.

The power must be turned off before repairing work for input break and output failure

including replacement of sensor, contactor or SSR, and all wiring must be completed

before power is turned on again.

To prevent instrument damage or failure, protect the power line and the input/output lines

from high currents with a protection device such as fuse, circuit breaker, etc.

Prevent metal fragments or lead wire scraps from falling inside instrument case to avoid

electric shock, fire or malfunction.

Tighten each terminal screw to the specified torque found in the manual to avoid electric

shock, fire or malfunction.

For proper operation of this instrument, provide adequate ventilation for heat dispensation.

Do not connect wires to unused terminals as this will interfere with proper operation of the

instrument.

Turn off the power supply before cleaning the instrument.

Do not use a volatile solvent such as paint thinner to clean the instrument. Deformation or

discoloration will occur. Use a soft, dry cloth to remove stains from the instrument.

To avoid damage to instrument display, do not rub with an abrasive material or push front

panel with a hard object.

Do not connect modular connectors to telephone line.

NOTICE

This manual assumes that the reader has a fundamental knowledge of the principles of electricity,

process control, computer technology and communications.

The figures, diagrams and numeric values used in this manual are only for purpose of illustration.

RKC is not responsible for any damage or injury that is caused as a result of using this instrument,

instrument failure or indirect damage.

RKC software is licensed for use with one computer and cannot be modified. This software may

not be duplicated except for backup purposes.

Periodic maintenance is required for safe and proper operation of this instrument. Some

components have a limited service life, or characteristics that change over time.

Every effort has been made to ensure accuracy of all information contained herein. RKC makes no

warranty expressed or implied, with respect to the accuracy of the information. The information in

this manual is subject to change without prior notice.

z

No portion of this document may be reprinted, modified, copied, transmitted, digitized, stored,

processed or retrieved through any mechanical, electronic, optical or other means without prior

written approval from RKC.

CAUTION

IMAE02-E3

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CONTENTS

Page

1. SPECIFICATIONS ................................................................1

2. WIRING.................................................................................2

3. SETTING FOR COMMUNICATION......................................4

3.1 Transfer to Communication Setting Mode.......................................................4

3.2 Communication Parameter Selection..............................................................5

3.3 Device Address Setting ...................................................................................6

3.4 Communication Speed Setting........................................................................9

3.5 Data bit Configuration Setting .......................................................................11

3.6 Interval Time Setting .....................................................................................13

3.7 Communocation Requirements.....................................................................17

4.PROTOCOL .........................................................................19

4.1 Polling...........................................................................................................19

4.1.1 Porlling procedures...........................................................................................20

4.1.2 Porlling procedure example ..............................................................................23

4.2 Selecting.......................................................................................................24

4. 2.1 Serecting procedures........................................................................................24

4.2.2 Serecting procedures example .........................................................................27

4.3 Communication Identifier List .......................................................................28

5. INPUT RANGE TABLES ....................................................30

6. TROUBLESHOOTING .......................................................34

7. ASCII 7-BIT CODE TABLE ................................................36

IMAE02-E3

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MEMO

IMAE02-E3

1. SPECIFICATIONS

Interface: Based on RS-485, EIA standard

Connection method: 2-wire system, half-duplex multi-drop connection

Communication distance: 1 km max.

The maximum communication distance will be affected by the

surrounding conditions.

Synchronous method: Start/stop synchronous type

Communication speed: 2400 bps, 4800 bps, 9600 bps, 19200 bps

Data bit configuration: Start bit: 1

Data bit: 7 or 8

Parity bit: Without, Odd or Even

Stop bit: 1 or 2

Protocol: ANSI X3.28 subcategory 2.5, A4

Polling/selecting type

Error control: Vertical parity (With parity bit selected)

Horizontal parity (BCC check)

Communication code: ASCII 7-bit code

Termination resistor: Externally connected

Xon/Xoff control: None

Maximum connections: 32 instruments maximum including a host computer

Signal logic: RS-485

Signal voltage Logic

V (A) - V (B) ≥ 2 V 0 (SPACE)

V (A) - V (B) ≤ -2 V 1 (MARK)

Voltage between V (A) and V (B) is the voltage of (A) terminal for the

(B) terminal.

IMAE02-E3

2. WIRING

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Connector pin number and signal details

Pin No. Symbol name Symbol

13 Signal ground SG

14 Send data/Receive data T/R (A)

15 Send data/Receive data T/R (B)

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Wiring method

z

zz

z

Connection to the RS-485 port of the host computer

T/R

(

)

T/R

(

)

Host com

uter

RS-485

T/R

(

)

T/R

(

)

31 max.

Paired wire

Shielded twisted

pair wire

AE500

Communication

terminal

AE500

Communication

terminal

* R: Termination resistors (Example: 120

Ω

1/2 W)

* R

T/R

(

)

T/R

(

)

To prevent electric shock or instrument failure, turn off the power before

connecting or disconnecting the instrument and peripheral equipment.

WARNING

2. WIRING

IMAE02-E3

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zz

z

Connection to the RS-232C port of the host computer

A RS-232C/RS-485 converter is required.

AE500

T/R (B)

T/R (A)

RS-485

T/R (A)

T/R (B)

RS-232C

Host computer

RS-232C/RS-485

converter

Shielded twisted

pair wire

Paired wire

Communication

terminal

* R * R

* R: Termination resistors (Example: 120

Ω

1/2 W)

When the host computer uses Windows 95/98/NT, use a RS-232C/RS-485 converter with

an automatic send/receive transfer function.

Recommended: CD485, CD485/V manufactured by Data Link, Inc. or equivalent.

The cable is provided by the customer.

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Connection with up to 31 AE500 and one host computer

AE500 AE500

Host computerHost computer

RS-232C/RS-485 converter

Junction terminals

3029 311 2 3 4

Device address

RS-485

RS-232C

RS-485

IMAE02-E3

3. SETTING FOR COMMUNICATION

In order to make communication between the digital indicator AE500 and the host computer, it is

necessary to set the device address, communication speed, data bit configuration and interval time.

Communication settings are made in communication setting mode.

The section in each picture is dimly lit.

3.1 Transfer to Communication Setting Mode

1. Turn on the power to the AE500. Thus, the input type and PV display change in this order.

2. Pressing the SET key while the shift key is being pressed when PV display is being displayed

selects communication setting mode. In this mode, device address Add are displayed in the first

place.

In order to terminate the communication setting mode, press the SET key while pressing the shift

key. After the communication setting mode terminates, the display changes to the PV display.

Communication setting mode

SET

ALM4

ALM1 ALM2 ALM3

PV display

Device address

ALM4

ALM1 ALM2 ALM3

3. SETTING FOR COMUNICATION

IMAE02-E3

3.2 Communication Parameter Selection

Parameters in communication setting mode are selected in the order of device address Add,

communication speed bPS, data bit configuration bIT and interval time set value InT. Each parameter

is selected by pressing the SET key.

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Display flowchart

Input type display

Power on

(Display for approx. 4 sec)

Display changes automatically

PV display

Press the SET key while pressing the shift key.

Device address

(add)

Communication speed

(bPS)

Data bit configuration

Interval time set value

(InT)

Press the

SET key.

Press the SET key

while pressing the

shift key.

Press the SET key.

Communication setting mode

PV display

3. SETTING FOR COMMUNICATION

IMAE02-E3

3.3 Device Address Setting

Set the device address by using numerals from 0 to 99. Press the UP or DOWN key to change the

numeral, and also press the shift key to shift the digit.

Symbol Name Setting range Description

Factory

set value

Device address 0 to 99 Sets the AE500 device address. 0

Add

When the communication parameter was changed, always turn on the power again.

Otherwise, no communication is performed by using the changed value.

If key operation is not performed for more than 1 minute without pressing the SET key after

the device address is set, the AE500 is automatically changed to PV display. In this case, the

set device address returns to the value before the setting is changed.

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Setting procedure

Example: When setting device address to 15.

1. Change the AE500 to communication setting mode, and then display the device address

For details, see the 3.1 Transfer to Communication Setting Mode (P. 4) and 3.2

Communication Parameter Selection (P. 5).

Continued on the next page.

SET

ALM4ALM1 ALM2

ALM3

Device address

3. SETTING FOR COMUNICATION

IMAE02-E3

2. Press the shift key to change the display from character to set value.

3. Set the device address. Press the UP key to enter 5 in the lowest digit.

4. Press the shift key to brightly light the tens digit.

Continued on the next page.

SET

ALM4ALM1 ALM2

ALM3

SET

ALM4ALM1 ALM2

ALM3

SET

ALM4ALM1 ALM2

ALM3

SET

Character display of device address Set value display of device address

ALM4ALM1 ALM2

ALM3

3. SETTING FOR COMMUNICATION

IMAE02-E3

5. Press the UP key to enter 1 in the tens digit.

6. Press the SET key to select the next communication parameter “Communication speed (bPS).”

As a result, the set device address is registered.

SET

ALM4ALM1 ALM2

ALM3

3. SETTING FOR COMUNICATION

IMAE02-E3

3.4 Communication Speed Setting

Set a communication speed of 2400 bps, 4800 bps, 9600 bps or 19200 bps by using numerals from 0

to 3. Press the UP or DOWN key to change the numeral.

Symbol Name Setting range Description

Factory

set value

Communication

speed

0: 2400 bps

1: 4800 bps

2: 9600 bps

Selects the communication

speed.

bPS

3: 19200 bps

Set the same communication speed to both the AE500 and connecting host computer.

When the communication parameter was changed, always turn on the power again.

Otherwise, no communication is performed by using the changed value.

If key operation is not performed for more than 1 minute without pressing the SET key after

the device address is set, the AE500 is automatically changed to PV display. In this case, the

set communication speed returns to the value before the setting is changed.

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Setting procedure

Example: When setting communication speed to “1: 4800 bps.”

1. Change the AE500 to communication setting mode, and then display the communication speed.

For details, see the 3.1 Transfer to Communication Setting Mode (P. 4) and 3.2

Communication Parameter Selection (P. 5).

Continued on the next page.

SET

ALM4ALM1 ALM2

ALM3

Communication speed

3. SETTING FOR COMMUNICATION

IMAE02-E3

2. Press the shift key to change the display from character to set value.

3. Press the DOWN key to enter 1 in the lowest digit. As a result, a communication speed of 4800

bps is set.

4. Press the SET key to change to the next communication parameter “Data bit configuration (bIT).”As a

result, the set communication speed is registered.

SET

ALM4ALM1 ALM2

ALM3

Character display of

communication speed

Set value display of

communication speed

SET

ALM4ALM1 ALM2

ALM3

SET

ALM4ALM1 ALM2

ALM3

3. SETTING FOR COMUNICATION

IMAE02-E3

3.5 Data bit Configuration Setting

Set the data bit configuration during communication. Press the UP or DOWN key to change the numeral.

Symbol Name Setting range Description

Factory

set value

Data bit

configuration

0 to 5

See Data bit

configuration table

Selects data bit configuration

during communication.

bIT

Data bit configuration table

Setting Data bit [bit] Parity bit Stop bit [bit]

0 8 None 1

1 8 None 2

27 Even 1

37 Even 2

47 Odd 1

57 Odd 2

Set the same data bit configuration to both the AE500 and connecting host computer.

When the communication parameter was changed, always turn on the power again.

Otherwise, no communication is performed by using the changed value.

If key operation is not performed for more than 1 minute without pressing the SET key after

the device address is set, the AE500 is automatically changed to PV display. In this case, the

set data bit construction returns to the value before the setting is changed.

3. SETTING FOR COMMUNICATION

IMAE02-E3

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Setting procedure

Example: When setting data bit configuration to “1: 8 data bits, no parity bit and 2 stop bits.”

1. Change the AE500 to communication setting mode, and then display the data bit configuration.

For details, see the 3.1 Transfer to Communication Setting Mode (P. 4) and 3.2

Communication Parameter Selection (P. 5).

2. Press the shift key to change the display from character to set value.

3. Press the UP key to enter 1 in the lowest digit. As a result, data bit configuration is set to “8 data

bits, no parity bit and 2 stop bits.”

4. Press the SET key to change to the next communication parameter “Interval time set value

(InT).”

As a result, the set data configuration is registered.

SET

ALM4ALM1 ALM2

ALM3

Data bit configuration

SET

ALM4ALM1 ALM2

ALM3

Character display of data bit configuration

Set value display of data bit configuration

SET

ALM4ALM1 ALM2

ALM3

SET

ALM4ALM1 ALM2

ALM3

3. SETTING FOR COMUNICATION

IMAE02-E3

3.6 Interval Time Setting

Set the interval time. Press the UP or DOWN key to change the numeral, and press the shift key to

shift the digit.

Symbol Name Setting range Description

Factory

set value

Interval time set

value

0 to 150

Sets the value to set the

interval time.

InT

* Can be set up to 250 ms if converted to interval time.

Equations for calculating interval time and interval time set value

Equations :

Interval time = Interval time set value

1.666 ms

Interval time set value = Interval time

1.666 ms

When the communication parameter was changed, always turn on the power again.

Otherwise, no communication is performed by using the changed value.

If key operation is not performed for more than 1 minute without pressing the SET key after

the device address is set, the AE500 is automatically changed to PV display. In this case, the

set interval time set value returns to the value before the setting is changed.

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

Setting procedure

Example: When setting interval time to 250 ms.

1. Change the AE500 to communication setting mode, and then display the interval time set value

For details, see the 3.1 Transfer to Communication Setting Mode (P. 4) and 3.2

Communication Parameter Selection (P. 5).

Continued on the next page.

SET

ALM4ALM1 ALM2

ALM3

Interval time

3. SETTING FOR COMMUNICATION

IMAE02-E3

2. Press the shift key to change the display from character to set value.

3. Here, as an interval time of 250 ms needs to be set, calculate the interval time set value using the

equation.

For the equation, see the Equations for calculating interval time and interval time set

value (P. 13).

Interval time set value:

250 ms ÷ 1.666 ms 150 (Round to the nearest whole number.)

Interval time:

150 × 1.666 ms 249.9 (Approx. 250 ms)

Thus, enter an interval time set value of 150 calculated from the above by pressing the UP or

DOWN key at the front of the AE500.

4. Press the DOWN key to enter 0 in the lowest digit.

Continued on the next page.

SET

ALM4ALM1 ALM2

ALM3

SET

Character display of interval time Set value display of interval time

ALM4ALM1 ALM2

ALM3

SET

ALM4ALM1 ALM2

ALM3

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RKC INSTRUMENT AE500 Communication Instruction Manual

Brand: RKC INSTRUMENT

Model: AE500

Type: Communication Instruction Manual

Here are some of the key features and possible use cases for the RKC INSTRUMENT AE500:

Data logging: The AE500 can be used to log data to a host computer for later analysis. This data can be used to track process trends, identify areas for improvement, and troubleshoot problems.

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RKC INSTRUMENT AE500 Communication Instruction Manual

RKC INSTRUMENT AE500 Communication Instruction Manual

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